Structural characterization and electrochemical performance of lithium trivanadate synthesized by microwave sol-gel method

Feng Wu; Lian Wang; Chuan Wu; Ying Bai

doi:10.1016/j.electacta.2009.03.061

Structural characterization and electrochemical performance of lithium trivanadate synthesized by microwave sol-gel method

Feng Wu, Lian Wang, Chuan Wu^*, Ying Bai

^*此作品的通讯作者

材料学院

Beijing Institute of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

44 引用（Scopus）

摘要

The Li_1+xV₃O₈ material was successfully synthesized at 450 °C in short sintering duration by microwave sol-gel route. X-ray diffraction suggests oxygen defects in the lattice. Based on Randles-Sevcik formula, cyclic voltammograms measurements were conducted to measure Li⁺ ion diffusion coefficient. The material exhibits high discharge capacity of 250 mA g^-1 at 0.2 mA/cm² after 30 cycles in the range of 2.0-4.0 V. Alternating current impedance tests show that the growth of the charge transfer resistance at 0.4 mA/cm² is more rapid than that of at 0.2 mA/cm² as the galvanostatical charge-discharge continues.

源语言	英语
页（从-至）	4613-4619
页数	7
期刊	Electrochimica Acta
卷	54
期	20
DOI	https://doi.org/10.1016/j.electacta.2009.03.061
出版状态	已出版 - 1 8月 2009

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title = "Structural characterization and electrochemical performance of lithium trivanadate synthesized by microwave sol-gel method",

abstract = "The Li1+xV3O8 material was successfully synthesized at 450 °C in short sintering duration by microwave sol-gel route. X-ray diffraction suggests oxygen defects in the lattice. Based on Randles-Sevcik formula, cyclic voltammograms measurements were conducted to measure Li+ ion diffusion coefficient. The material exhibits high discharge capacity of 250 mA g-1 at 0.2 mA/cm2 after 30 cycles in the range of 2.0-4.0 V. Alternating current impedance tests show that the growth of the charge transfer resistance at 0.4 mA/cm2 is more rapid than that of at 0.2 mA/cm2 as the galvanostatical charge-discharge continues.",

keywords = "Cathode material, Electrochemical properties, Lithium trivanadate, Microwave sol-gel route, Rechargeable batteries",

author = "Feng Wu and Lian Wang and Chuan Wu and Ying Bai",

year = "2009",

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doi = "10.1016/j.electacta.2009.03.061",

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T1 - Structural characterization and electrochemical performance of lithium trivanadate synthesized by microwave sol-gel method

AU - Wu, Feng

AU - Wang, Lian

AU - Wu, Chuan

AU - Bai, Ying

PY - 2009/8/1

Y1 - 2009/8/1

N2 - The Li1+xV3O8 material was successfully synthesized at 450 °C in short sintering duration by microwave sol-gel route. X-ray diffraction suggests oxygen defects in the lattice. Based on Randles-Sevcik formula, cyclic voltammograms measurements were conducted to measure Li+ ion diffusion coefficient. The material exhibits high discharge capacity of 250 mA g-1 at 0.2 mA/cm2 after 30 cycles in the range of 2.0-4.0 V. Alternating current impedance tests show that the growth of the charge transfer resistance at 0.4 mA/cm2 is more rapid than that of at 0.2 mA/cm2 as the galvanostatical charge-discharge continues.

AB - The Li1+xV3O8 material was successfully synthesized at 450 °C in short sintering duration by microwave sol-gel route. X-ray diffraction suggests oxygen defects in the lattice. Based on Randles-Sevcik formula, cyclic voltammograms measurements were conducted to measure Li+ ion diffusion coefficient. The material exhibits high discharge capacity of 250 mA g-1 at 0.2 mA/cm2 after 30 cycles in the range of 2.0-4.0 V. Alternating current impedance tests show that the growth of the charge transfer resistance at 0.4 mA/cm2 is more rapid than that of at 0.2 mA/cm2 as the galvanostatical charge-discharge continues.

KW - Cathode material

KW - Electrochemical properties

KW - Lithium trivanadate

KW - Microwave sol-gel route

KW - Rechargeable batteries

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DO - 10.1016/j.electacta.2009.03.061

M3 - Article

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SN - 0013-4686

VL - 54

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JO - Electrochimica Acta

JF - Electrochimica Acta

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ER -

Structural characterization and electrochemical performance of lithium trivanadate synthesized by microwave sol-gel method

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